Spring-based JMS Client兑现

Spring-based JMS Client实现

Spring 针对 ActiveMQ提供了许多帮助类，简化了JMS Client 编写。

1. Configuring JMS connections

    (1) 配置ActiveMQConnectionFactory：

<bean id="jmsConnectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
		<property name="brokerURL" value="tcp://localhost:61616" />
		<property name="userName" value="admin" />
		<property name="password" value="password" />
</bean>

    (2) 配置池链接以提升性能：PooledConnectionFactory：   

<bean id="pooledJmsConnectionFactory" class="org.apache.activemq.pool.PooledConnectionFactory"
		destroy-method="stop">
		<property name="connectionFactory" ref="jmsConnectionFactory" />
</bean>

     PooledConnectionFactory依赖JAR:commons-pool.

2. Configuring JMS destinations

<bean id="cscoDest" class="org.apache.activemq.command.ActiveMQTopic">
		<constructor-arg value="STOCKS.CSCO" />
</bean>

 3. Creating JMS consumers

<!-- The message listener -->
<bean id="portfolioListener" class="org.apache.activemq.book.ch3.portfolio.Listener"></bean>

<!-- Spring DMLC -->
<bean id="cscoConsumer" class="org.springframework.jms.listener.DefaultMessageListenerContainer">
		<property name="connectionFactory" ref="jmsConnectionFactory" />
		<property name="destination" ref="cscoDest" />
		<property name="messageListener" ref="portfolioListener" />
</bean>

 4. Creating JMS producers

     JMS publisher configuration in Spring:

<!-- Spring JMS Template -->
	<bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
		<property name="connectionFactory" ref="pooledJmsConnectionFactory" />
</bean>

<bean id="stockPublisher" class="org.apache.activemq.book.ch7.spring.SpringPublisher">
		<property name="template" ref="jmsTemplate" />
		<property name="destinations">
			<list>
				<ref local="cscoDest" />
				<ref local="orclDest" />
			</list>
		</property>
</bean>